The crazy ladies guide to love

In "Obsessed," Ali Larter, Beyoncé Knowles and Idris Elba form a love triangle -- only two of them are, you know, married. What's a third wheel to do except go a little psycho? The crazy lady thriller is back at long last. And with it, our guide to the do's and don'ts for those women lusting after men, who for whatever reason, are unavailable. We haven't even seen "Obsessed" but the trailer alone says so much:

Do: Date a married a guy if they say they're going to leave their spouse -- even if they change their minds. Should that happen, try and find you and your man in a parked car alone at night. You could accidentally rip open your dress while in the passenger seat.

Don't: Mess if Sasha Fierce is his wife. She's packing a robotic arm!